6/10*5,7=3,42

Let's evaluate the expression step by step.

First, calculate \( \frac{6}{10} \) which is \( 0.6 \).

Next, multiply \( 0.6 \) by \( 5.7 \):

\[ 0.6 \times 5.7 = 3.42 \]

So, the calculation \( \frac{6}{10} \times 5.7 = 3.42 \) is indeed correct.